Questions
A wavelength 0.60 cm is produced in air and it travels at a speed of 300 ms–1. It will be an
a
Audible wave
b
Infrasonic wave
c
Ultrasonic wave
d
None of the above
detailed solution
Correct option is C
n=vλ=3000.6×10−2Hz=36×104Hz=50,000Hz⇒Wave is ultrasonic.Talk to our academic expert!
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Ultrasonic signal sent from SONAR returns to it after reflection from a rock after a lapse of 1 sec. If the velocity of ultrasound in water is 1600 ms–1, the depth of the rock in water is
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